Hoisting-hook.



LCHAB.

HOISTING HOOK. APPucMlon FILED APR. 14. |915.

1,159,500. Patented Aug. 17, 1915.

orrron JOSEPH GHIB, OF DORCHESTER, NEBRASKA.

HOISTING-HOOK. Y

Specication of Letters Patent.

Patented Aug. 1'?, 1915..

Application tiled April 14, 1915. Serial No. 21,359.

To all whom it may concern.:

Be it known that'I, JOSEPH CHAB, a citizen of the United States of America, residin at Dorchester, in the county of Saline and tate of Nebraska, have invented certain new and useful Improvements in Hoisting-Hooks, of which the following is a specifcation.

The invention relates to an improvement in hoisting hooks, and particularly to a hoisting hook of the type adapted for control from a more or less remotel point to release the element carried by the hook, whereby the load may be automatically released or dropped at any desired point. l

The invention is designed to provide a i hoisting hook in which the jaWS are 10Ckd in closed` relation through the medium of a.

spring pressed bolt, adapted for manual operatlon, the longitudinal movement of the bolt 'releasing the jaws to permit opening ofthe same-.to release the load connected element, the bolt in fully retracted position operating 'to hold the doors open until the load connected element is replaced therein,

whereupon the jaws are forced to a' closed position and automatically locked in such position by the bolt. j

The invention in its preferred form of details will be described in the following specification, reference being had particularly to the accompanying drawings, in

which Figure 1 is a perspective view Vof the improved releasing hook Fig. 2 is a plan of the same with the cover plateremoved, and the parts being .shown in locked or operative position. Fig. 3`is a similar viewwith the parts shown in a released position.

The improved hoisting` hook is constructed to provide a base portion 1, which has an inner surface to provide for the reception of the moving parts of the hook. In forming the base 1 to accommodate the moving parts said inner surface of the base is cut out or channeled to provide a longitudinally extending throat y2 arranged centrally and longitudinally of the base, the lower end of the throat communicating with a recess 3, coextensive with the width of the base and extending to the lower edge thereof, said recess belng provided for the reception of the jaws hereinafter referred to. Above the recess 3 the throat 2 is laterally enlarged, on each side, as at 4, t0 provide spring recesses, and immediately above the enlargement the throat proper is of increased width as at 5 for a portion of its upper length, as clearly shown in Figs. 2 and 3. As thus constructed the relatively lnner surface of the base is in effect formed with side abutments 6, the proximate edges of which, as well asthe lower edges, are shaped to provide the throat, recess, and various enlargements, and while it is contemplated that the parts be constructed of an integral member, lso far as the base is concerned it is obvious that if desired the abutments 6 may be of separate features, with their edges appropriately formed, and secured to the base, which under some circumstances would comprise a comparatively thin plate. A cover plate 7 is designed to close over the v that with the cover plate in place the various recesses, throat portions and the like are closed, to completely house the working parts.

Pivotally mounted in the recess 3, Vpreferably on pivot pins extending through the base and cover plate are jaws 8 rounded on their outer edges, and formed on their inner edges with a rounded inwardly extending semi-circular recess 9, and above said recess with a cut away portion 10. The construction of the jaws and their pivotal support is such that when said jaws are in locking position the recesses 9 form a circular receivingA opening while the out-away portions 10 present a channel corresponding in width to and disposed in alinement with the throat 2. The material of each jaw intermediate the recess 9 and cut-away portion 10 provides av projection 11, the said projections forming the bottom wall of the channel referred to. a

Mounted for movement in the throat 2 is a locking bolt 12, which bolt is formed at its lower end with an enlarged locking nose '13. The relatively upper end of the bolt is formed side of the base, so

.ed enlargements 4 o the throat, the lower ends of the springs bearing against the nose 13 and the up er ends fitting in notches 16 in the wallsoi the enlargement. The base member and cover Slate are cut out at their lower and upper en s as at 17 and 18 to permit movement of the load connected element 19into and out of the jaws, and to permit the application of an operating);u ember as 20 to the upper end of the loc g bolt 12. The hook as an' entirety is formed with openings 21,.preferably in the upper portion, to receive a supporting cable or rope 22 the operating member-20 of the locking bolt being the form of a rope or the like which may be extended in any convenient form. Assuming the element 19 in the hook and the jaws thereoflocked to hold the element in place, it is obvious that so long as 'the nose 13 of the locking bolt fits in the channel formed by the jaws, said jaws connot open to release the element. When it is desired to release said element and drop the load, the operating. member 20 is drawn upon to move the bolt upwardly, and as soon as the nose 13 leaves the channel of the jaws, the latter, under'the weight of the load will spread to release the loadconnected element. As the jaws open their upper edges ride beneath the lower edge of the nose 13 and the latter under the tension of the spring 15 will exert suliicient pressure on the upper edges of the jaws to hold them open. When it 1s desired to again connect the element 19 the latter is forced between the lower ends of the jaws and up and into contact with the projections 11, which contact tends to move the lower ends of the jaws into-closed relation. The movement is continued until the usual channel is resented for the reception of the nose of t e bolt, whereupon said nose is snapped int'o the channel and the `automatically released at any time-and rom anyI conveniently remote point, the Parts invo ved being-few in number and o exceedingly simple construction and arrangement, disposed notwithstanding for rigidity and strength of structure and certainty of operation under all -working y conditions.

What is claimed is:

' 1. A hoisting hook including a base, jaws pivotally mounted on the base, the upper ends of the jaws being` formed to together present a channel, a o mounted in the base, and means normally projectin said bolt into said channel.

2. A oisting hook includin a base formed with athroat, jaws pivota ly mounted in the base and formed -to together p resent a channel, a lookin bolt slidably mounted in the throat an adapted to fit within the channel when the jaws are in closed relation, and sprin base and bearing on the olt.

3. A hoisting hook including abase formed with a throat, jaws pivotally mounted in the base and formed to together present a channel, 'a lookin bo t slidably mounted in the throat an adapted to fit `within the channel when the jaws are in closed relation, and springs .mounted in the baseand bearing on the bolt, and a cover plate secured to the base` and housing the parts.

In testimony whereof I aiiix my signature in presence of two witnesses.

v JOSEPH CHAB; Witnesses:

WM. E. 'NEL'soN, C. H. NELSON.

cking bolt slidably f mounted in the 

